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    v1.0.30
    OpenPayerBilling CodesRadiation Treatment ManagementCPT cpt-77427-radiation-therapy-management-external-beam
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    CPT 77427: Radiation Treatment Management

    Medicare pays $201 and commercial payers pay $274 on average nationally for this procedure.

    CPT code 77427 describes radiation treatment management for external beam radiation therapy, documenting clinical oversight and management of a patient undergoing a defined course of ionizing radiation directed at malignant or select non‑malignant lesions; service type: radiation therapy management; typical site of service: outpatient radiation oncology center or hospital radiation oncology department where external beam therapy is delivered.

    For related coverage guidance, see recent payer policy updates: Radiation oncology coverage and treatment delivery guidelines, Proton Beam Therapy, Radiation and Oncologic Procedures.

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    National Reimbursement Benchmarks

    Medicare's mean rate of $200.6 sits noticeably below the BUCA (average commercial) mean of $274.1, indicating commercial contracts pay substantially more on average for CPT 77427 than the Medicare baseline. The gap of $73.5 separates Medicare and BUCA means, reflecting a common commercial uplift above Medicare for this code; Blue Cross Blue Shield, Cigna, Aetna, and UnitedHealth Group all have mean rates above Medicare, with variability in how far above they land.

    Examining dispersion (P75 minus P25) highlights which payers have tighter versus wider national spreads. Blue Cross Blue Shield shows a range of $94.2 (P75 $303.8 minus P25 $209.6), while BUCA's interquartile spread is $130 (P75 $325.2 minus P25 $195.3). UnitedHealth Group's spread is $163.4, Cigna's is $181.1, and Aetna's is $153.6, making Cigna the widest and Blue Cross Blue Shield the tightest among the listed payers.

    National Payer Mean Reimbursement Rates

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    State Reimbursement Rates

    State: Alaska1 / 51

    Rate by payer

    Clinical & Coding Specifications

    Clinical Context

    A 64-year-old patient with newly diagnosed left-sided breast cancer presents to Radiation Oncology for external beam radiation therapy planning and management. After multidisciplinary tumor board review and breast-conserving surgery, the radiation oncology team prescribes a course of external radiation to the breast and tumor bed to reduce local recurrence risk. The clinical workflow includes consultation with a Radiation Oncology Physician, simulation (CT simulation with immobilization), treatment planning by dosimetry and medical physicists, image-guided setup verification, and daily external beam delivery over the prescribed course. During the treatment course the physician provides on-treatment management, documents toxicities such as skin erythema or fatigue, and adjusts treatment or supportive care as needed. Follow-up visits are scheduled after completion of the radiation course to assess tumor response and late effects.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    77431Radiation therapy management with complete course of therapy consisting of 1 or 2 fractions onlyAlternative radiation management code used when the entire prescribed course is 1–2 fractions rather than a standard multi-fraction course.
    77432

    Related Modifiers

    10 rows

    ModifierDescriptionWhen to Use
    26Modifier 26 (Professional Component) identifies and bills only the professional portion of a split service — the physician’s interpretation, report, and medical judgment — when the technical…- Use CPT Modifier -26 when you are billing only the professional component (PC) of a split‑bill eligible service—i.e., you performed the physician interpretation, medical judgment and prepared a…
    50Modifier –50 (Bilateral Procedure) is appended to a CPT code when an identical procedure is performed on paired anatomical structures during the same operative session. The AMA states to add…- Use modifier -50 when the same CPT surgical, diagnostic, or radiology procedure is performed on paired anatomical structures (both sides of the body) during the same operative/session by the same…
    52Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
    53Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…
    59Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
    62Modifier 62 indicates that two surgeons function as co‑surgeons, each performing distinct parts of the same primary surgical procedure. It is appended to the primary procedure code (and any…- Use modifier -62 when two surgeons act as co‑surgeons (both primary surgeons) on a single definitive primary procedure, each performing distinct parts of the same surgical procedure (append -62 to…
    76Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or…- Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the…
    77Modifier 77 indicates that a previously performed procedure or service was legitimately repeated by a different physician or other qualified health care professional. The AMA’s CPT definition…- Use modifier 77 when a basic procedure or service already performed is repeated by a different physician or other qualified health care professional (for example, a second provider independently…
    80CPT® Modifier 80 (Assistant Surgeon) is appended to a surgical CPT code when a physician (MD or DO) provides full, continuous assistance throughout the operative procedure. It is intended only for…- Use CPT Modifier -80 when a physician (MD or DO) serves as an assistant surgeon and provides full, continuous assistance throughout the entire operative procedure; append -80 to the surgical CPT…
    95Modifier 95 indicates that a service was provided via synchronous, real‑time audio‑video telehealth rather than in‑person. Per CMS, AAPC and professional associations, append modifier 95 to claim…- Use modifier 95 to indicate a service was furnished via synchronous, real‑time audiovisual telehealth (a live audio‑video conference between patient and provider) rather than in‑person. - Pair…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    2085R0001X
    2085N0700X
    2085B0100X
    125J00000X
    2080H0002X
    2081N0008X
    207W00000X
    1835G0000X

    Related Payer Policy Updates

    Specialty: Radiation Oncology1 / 2

    10 rows

    PolicyPayerEffective Date
    Radiation oncology coverage and treatment delivery guidelinesevicore2026-11-05
    Proton Beam Therapyuniversityofutahhealthplans2026-10-25
    Radiation and Oncologic ProceduresUnitedHealthcare2026-09-01
    Electronic Brachytherapy for Nonmelanoma Skin CancerBluecross Idaho2026-07-30
    Surface Radiation Therapy for Treatment of Non-Melanoma Skin Cancereocco2026-07-09
    Radiofrequency Ablation of Tumors Outside the LiverProvidence Health Plan2026-07-01
    Therapeutic Radiopharmaceuticals in Oncology (Lutathera, Pluvicto, Xofigo) Coverage CriteriaBlue Cross Blue Shield - North Carolina2026-07-01
    Intensity Modulated Radiation TherapyAmbetter Georgia2026-06-01
    Irreversible Electroporation (IRE) of Tumors Other Than LiverBlue Cross Blue Shield - Rhode Island2026-06-01
    Irreversible Electroporation (IRE) — NanoKnife (Preauthorization Required)Blue Cross Blue Shield - Nebraska2026-06-01

    Related Codes

    CPT-77431-RADIOTHERAPY-MANAGEMENT-ONE-TWO-FRACTION-COURSE

    CPT 77431: Management of Short-Course Fractionated Radiotherapy

    CPT-77432-SINGLE-SESSION-STEREOTACTIC-RADIOSURGERY-PROFESSIONAL

    CPT 77432: Stereotactic Radiosurgery, Single Session (Professional Component)

    CPT-77435-STEREOTACTIC-BODY-RADIOTHERAPY-TREATMENT-MANAGEMENT

    CPT 77435: Stereotactic Body Radiotherapy Course (≤5 Fractions)

    CPT-77437-SUPERFICIAL-RADIATION-THERAPY-PER-FRACTION

    CPT 77437: Superficial Radiation Therapy, Per Fraction

    CPT-77438-ORTHOVOLTAGE-SURFACE-RADIATION-THERAPY-SINGLE-FRACTION

    CPT 77438: Orthovoltage Surface Radiation Therapy, Single Fraction

    CPT-77439-ULTRASOUND-GUIDED-SRT-FIELD-PLACEMENT

    CPT 77439: Ultrasound-Guided SRT Field Localization for Cutaneous Tumors

    CPT-77469-INTRAOPERATIVE-RADIATION-THERAPY-IORT-DURING-SURGERY

    CPT 77469: Intraoperative Radiation Therapy Management

    CPT-77470-SPECIAL-RADIOTHERAPY-MANAGEMENT

    CPT 77470: Special Radiotherapy Procedures Requiring Additional Management

    CPT-77499-UNLISTED-THERAPEUTIC-RADIOLOGY-TREATMENT-MANAGEMENT

    CPT 77499: Therapeutic Radiology Treatment Management, Unlisted

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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    Stereotactic radiation treatment management of cranial lesion(s) (complete course of treatment consisting of 1 session)
    Related when stereotactic radiosurgery is used for brain lesions; represents single-session management distinct from standard fractionated RT.